Figure 1-11
Parallel 3DC configuration in synch asynchronous mode
Storage System
LUN
Production
center
Site A
Storage System
Intra-city DR
center
Site B
Storage System
Site C
LUN
Remote DR
center
LUN
Optical fiber cable
Network cable
Asynchronous
Remote
Replication
Synchronous
Remote
Replication
The parallel 3DC configuration in synch asynchronous mode meets the following
service requirements:
l
Real-time backup and remote backup of data ensure the reliability of critical service data
and ensure that critical service data has two copies.
l
Data backup of the remote DR center (C) does not depend on the intra-city DR center
(B). If the intra-city DR center (B) or remote DR center (C) fails, the production center
(A) still has a backup site.
l
When a disaster occurs at the production center (A), the intra-city DR center (B) takes
over services immediately and recovers data. If the disaster also affects the intra-city DR
center (B), data in the remote DR center (C) is still available.
shows the parallel 3DC configuration in asynch asynchronous mode.
OceanStor V3 Series
Remote Replication Feature Guide for Block
1 Feature Description
Issue 06 (2018-01-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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